US4527501A - Mooring system carried outboard by a rigid arm on a vessel - Google Patents

Mooring system carried outboard by a rigid arm on a vessel Download PDF

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Publication number
US4527501A
US4527501A US06/511,197 US51119783A US4527501A US 4527501 A US4527501 A US 4527501A US 51119783 A US51119783 A US 51119783A US 4527501 A US4527501 A US 4527501A
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US
United States
Prior art keywords
shaped body
arm
conduit coupling
ring
conduits
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/511,197
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English (en)
Inventor
Leendert Poldervaart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Single Buoy Moorings Inc
Original Assignee
Single Buoy Moorings Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Single Buoy Moorings Inc filed Critical Single Buoy Moorings Inc
Assigned to SINGLE BUOY MOORINGS, INC., A SWISS CORP. reassignment SINGLE BUOY MOORINGS, INC., A SWISS CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: POLDERVAART, LEENDERT
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Publication of US4527501A publication Critical patent/US4527501A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00—Buoys
    • B63B22/02—Buoys specially adapted for mooring a vessel
    • B63B22/021—Buoys specially adapted for mooring a vessel and for transferring fluids, e.g. liquids
    • B63B22/025—Buoys specially adapted for mooring a vessel and for transferring fluids, e.g. liquids and comprising a restoring force in the mooring connection provided by means of weight, float or spring devices

Definitions

  • the invention relates to a floating system comprising a ring shaped body with means for connecting anchor chains, which ring shaped body is rotatable around a vertical axis in relation to the floating system, and comprising furthermore fluid conduits running from said floating system downwards through said ring shaped body and connected to a rotatable conduit coupling installed on said floating system above the ring shaped body.
  • the floating system according to said Dutch Patent Application No. 65,05344 comprises a tanker, the bow of which carries a forwardly extending arm, rigidly connected to said bow, in which arm a device is installed, rotatable around a vertical axis, to which device anchor chains are connected and through which device conduits extend which under the water level are embodied as hoses and which conduits above the arm through a rotatable coupling are connected to conduits running to the tanker. Therefore the tanker can swivel around the anchoring arrangement.
  • the system described in U.S. Pat. No. 3,366,982 comprises a buoy in which a ring shaped rotatable body is mounted by means of bearings, which body carries the anchor chains and through which body conduits extend which underneath the buoy are embodied as hoses and which conduits through a rotable coupling are connected to conduits running to ships to be moored to the system.
  • the rotatable conduit coupling is installed on the floating system by means of a cardan joint with two horizontal axes, which cardan joint is positioned at the outside of the conduit coupling and in that the ring shaped body has an inner central opening of such large dimensions that conduits or hoses running from the coupling through said opening downwards are maintained free of said ring shaped body in each angular position allowed by the cardan joint.
  • the conduit coupling is supported by means of a cardan joint there is no relation anymore between the movements of the floating system and the conduits. Therefore the life of the poorly accessible submerged conduits or hoses is extended significantly.
  • the conduits extending above the water level from the rotatable conduit coupling, which in general extend to the storage spaces of the floating system are in this case subject to stronger movements, however said conduits or hoses are easily accessible.
  • FIG. 1 shows in a side view, partly in cross section, of a system according to the invention.
  • FIG. 2 shows a top plan view of FIG. 1.
  • FIG. 1 illustrates a rigid arm 1, connected to a non-illustrated tanker and for instance extending from the bow thereof in forward direction in a well known way.
  • Said arm 1 has a large opening 2, in which the ring shaped body 3 is supported on bearings 4 respectively 5, which ring shaped body has at the underside thereof a flange 6 for connecting the anchor chains 7 and 8 thereto.
  • conduit coupling 9 is installed to which the downwards extending hoses 10, 11 and 12 are connected and to which furthermore at the upperside the hoses 13, 14 and 15 are connected.
  • the conduit coupling 9 is rotatably supported in a subframe 18 by means of the horizontal pivots 16 and 17 and said subframe 18 is by means of the pivots 19 and 20 supported on two trestles 21 and 22 positioned on the arm 1.
  • the floating system has the ability to carry out movements, caused by wind and waves around three mutually perpendicular axes and to carry out movements in the horizontal plane.
  • the conduit coupling will under the influence of the weight of the conduits or hoses 10-12 hanging thereon be maintained in position and because of the presence of the cardan joint the conduit coupling 9 is able to move in relation to the arm 1 of the floating system so that the hoses or conduits 10-12 are essentially kept free of any movement.
  • the ring shaped body 3 has an opening of such dimensions that the hoses 10-12 will not come into contact with said ring shaped body 3 if the system is displaced in the horizontal plane.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Supports For Pipes And Cables (AREA)
  • Joints Allowing Movement (AREA)
US06/511,197 1982-07-07 1983-07-06 Mooring system carried outboard by a rigid arm on a vessel Expired - Lifetime US4527501A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8202738A NL8202738A (nl) 1982-07-07 1982-07-07 Drijvende inrichting.
NL8202738 1982-07-07

Publications (1)

Publication Number Publication Date
US4527501A true US4527501A (en) 1985-07-09

Family

ID=19839994

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/511,197 Expired - Lifetime US4527501A (en) 1982-07-07 1983-07-06 Mooring system carried outboard by a rigid arm on a vessel

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US (1) US4527501A (nl)
NL (1) NL8202738A (nl)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633801A (en) * 1985-05-09 1987-01-06 Shell Oil Company Stress reduction connection apparatus for cylindrical tethers
US4782781A (en) * 1985-10-15 1988-11-08 Single Buoy Moorings Inc. Quick-action coupling between a ship and a mooring system
EP0407662A1 (en) * 1989-07-14 1991-01-16 Single Buoy Moorings Inc. Device for positioning of a buoy body
WO2003076262A2 (en) * 2002-03-08 2003-09-18 Fmc Technologies, Inc. Disconnectable mooring system and lng transfer system and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407768A (en) * 1967-01-11 1968-10-29 Continental Oil Co Offshore storage, mooring and loading facility
US3602175A (en) * 1969-07-02 1971-08-31 North American Rockwell Oil production vessel
US3677302A (en) * 1970-03-09 1972-07-18 Subsea Equipment Ass Ltd Bi-axial articulating pipeline structure
FR2376022A2 (fr) * 1977-01-03 1978-07-28 Exxon Research Engineering Co Ensemble d'amarrage d'un batiment flottant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407768A (en) * 1967-01-11 1968-10-29 Continental Oil Co Offshore storage, mooring and loading facility
US3602175A (en) * 1969-07-02 1971-08-31 North American Rockwell Oil production vessel
US3677302A (en) * 1970-03-09 1972-07-18 Subsea Equipment Ass Ltd Bi-axial articulating pipeline structure
FR2376022A2 (fr) * 1977-01-03 1978-07-28 Exxon Research Engineering Co Ensemble d'amarrage d'un batiment flottant

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633801A (en) * 1985-05-09 1987-01-06 Shell Oil Company Stress reduction connection apparatus for cylindrical tethers
US4782781A (en) * 1985-10-15 1988-11-08 Single Buoy Moorings Inc. Quick-action coupling between a ship and a mooring system
EP0407662A1 (en) * 1989-07-14 1991-01-16 Single Buoy Moorings Inc. Device for positioning of a buoy body
US5098323A (en) * 1989-07-14 1992-03-24 Single Buoy Moorings, Inc. Device for positioning of a buoy body
WO2003076262A2 (en) * 2002-03-08 2003-09-18 Fmc Technologies, Inc. Disconnectable mooring system and lng transfer system and method
US20030226487A1 (en) * 2002-03-08 2003-12-11 Fmc Technologies, Inc. Disconnectable mooring system and LNG transfer system and method
WO2003076262A3 (en) * 2002-03-08 2004-06-24 Fmc Technologies Disconnectable mooring system and lng transfer system and method

Also Published As

Publication number Publication date
NL8202738A (nl) 1984-02-01

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Owner name: SINGLE BUOY MOORINGS, INC., P.O. NOX 124, CH-1723

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